Medicinal plant knowledge and its erosion among the Mien (Yao) in northern Thailand

We studied local knowledge and actual uses of medicinal plants among the Mien in northern Thailand, documenting traditional medical practices and its transfer between generations.With the assumption that discrepancies between knowledge and actual use represent knowledge erosion, we studied whether actual use of medicinal plants corresponded to people's knowledge of such uses.We used local knowledge from four specialist informants as the domain...